Question

I wish to execute a batch file and have it call itself 10 times.

set /a iteration=0%1+1
IF %iteration% EQU 10 exit
rem Taskkill /IM aspnet_compiler.exe /F
timeout 1
call KillBILLd.bat %iteration%

However, it will only get to the number 8 before erroring with

Invalid number.  Numeric constants are either decimal (17), hexadecimal (0x11), 
or octal (021).

on line

set /a iteration=0%1+1

How can I fix this error?

Answer 1

You’ve got 0%1 in that expression – if your argument is 8, that expands to 08, which isn’t a valid octal number (8 is not an octal digit), and so you get that error. I’m not a batch file expert, but I guess you want to leave off the leading 0:

set /a iteration=%1+1

Here’s a link to some SET command documentation.